A US woman who shot and killed her husband and two adult children before taking her own life is thought to have committed the shocking crime as a result of being ostracised from the religion she was raised in.

Every time I tell a mate I’m doing a story on cryptocurrency, they invariably ask me the same two questions: should they invest their own hard-earned money, and which cryptocurrency will get them a Lamborghini/yacht/island quickest?

Alleged NSW child groomer charged

Police have posed as a teenage girl to attract the attention of an alleged child groomer on social media.

A 52-year-old man was charged with grooming offences after an investigation by Child Exploitation Internet Unit officers.

Police allegedly had conversations with the man online, while pretending to be a 13-year-old girl, and say he made explicit remarks regarding the sexual exploitation of children.

The man was arrested at Ermington in Sydney's northwest on Thursday and charged with using a carriage service to groom a person under 16 and using a carriage service to transmit indecent communication to a person under 16.